package day05;

public class ForDemo {
    public static void main(String[] args) {
        int num = 0;
        for (int i=1;i<=100;i++){
            num+=i;
        }
        System.out.println(num);
    }
}


class sd{
    public static void main(String[] args) {
        for(int i=1;i<=9;i++){
            if (i==4){
                break;
            }
            System.out.println(i+"*9="+i*9);
        }
    }
}
